Method for transmitting and receiving frame
AssigneeNewracom, Inc.
InventorsILGU LEE, Changwahn YU
Life of this patent
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Abstract
A frame transmission method is provided by a device in a wireless communication network. The device generates a signal field including a symbol using a 64 FFT and carrying signaling information, and generates a data field including a symbol using a FFT having a larger size than the 64 FFT and carrying data. The device transmits a frame including the signal field and the data field.
Claims20
A method of transmitting a frame by a device in a wireless communication network, the method comprising:
- generating a High Efficiency Signal A (HE-SIG-A) field including a symbol having a first subcarrier spacing, the HE-SIG-A field carrying common signaling information for a plurality of receiving devices, the HE-SIG-A field occupying a 20 MHz bandwidth;
- generating a data field including a symbol having a second subcarrier spacing narrower than the first subcarrier spacing, the data field carrying data for a receiving device of the plurality of receiving devices, and the data field occupying a resource block;
- and
- transmitting a frame including the HE-SIG-A field and the data field,
- wherein an entire bandwidth used to transmit the frame is divided into a plurality of resource blocks for a plurality of users in the data field, and the resource block occupied by the data field is one of the plurality of resource blocks, and
- wherein an upper half of a bandwidth of the resource block carries the data for the receiving device, and a lower half of the bandwidth of the resource block carries a duplicate of the data for the receiving device carried in the upper half of the bandwidth of the resource block.
A method of transmitting a frame by a device in a wireless communication network, the method comprising:
- transmitting, on a 20 MHz channel, a legacy preamble compatible with a previous version wireless communication network;
- transmitting, on the 20 MHz channel, a High Efficiency Signal A (HE-SIG-A) field carrying common signaling information for a plurality of receiving devices;
- transmitting, on a resource block included in the 20 MHz channel, a data field for a receiving device of the plurality of receiving devices,
- wherein an upper half of a bandwidth of the resource block carries data for the receiving device, and a lower half of the bandwidth of the resource block carries a duplicate of the data for the receiving device carried in the upper half of the bandwidth of the resource block.
A method of receiving a frame by a device in a wireless communication network, the method comprising:
- receiving a High Efficiency Signal A (HE-SIG-A) field including a symbol having a first subcarrier spacing, the HE-SIG-A field carrying signaling information for a plurality of receiving devices including the device, the HE-SIG-A field occupying a 20 MHz bandwidth;
- decoding a symbol of the HE-SIG-A field on a basis of the first subcarrier spacing;
- receiving a data field including a symbol having a second subcarrier spacing narrower than the first subcarrier spacing, the data field carrying data and occupying a resource block having a bandwidth;
- and
- decoding the symbol of the data field on a basis of the second subcarrier spacing,
- wherein an upper half of the bandwidth of the resource block carries the data, and a lower half of the bandwidth of the resource block carries a duplicate of the data carried in the upper half of the bandwidth of the resource block.
Dependencies are inferred from the claim text.